NOTE; Continuous use at
temperatures below 68°F will diminish the
usable capacity approx; 4-5% for each 10°F and this
should be taken into account when your system is being sized or designed or when
advanced battery monitoring equipment is being programmed etc. Note; The above are DIN (Euro) metric case sizes and discharge data are
based on 1.75v/cell cutoff.Standard
BCI (USA) case equivalents are available in the Deka Gel-Techlabel and listed in the Table
below.

Quality and Engineering Excellence in Sealed Gelled Technology

Part #

Nom.V

BCI Ah rate 0°F

CCA @
0°F/32°F

25A(minutes)

Length
in/mm

Width
in/mm

Height
in/mm

Weight
lbs/K

8GUI

12

31

215/310

47

7.75/197

5.20/132

7.25/184

24/10.9k

8G24

12

74

410/575

140

10.88/276

6.75/171

9.88/251

53/24.0k

8G27

12

86

505/700

170

12.75/324

6.75/171

9.88/251

63/28.6k

8G31

12

98

550/760

195

12.94/329

6.75/171

9.38/238

70/31.8k

8G4D

12

183

1050/1350

395

20.75/527

8.50/216

10/254

129/58.5k

8G8D

12

225

1265/1615

500

20.75/527

11/279

10/254

161/73.0k

8G6V200

6

180

585/850

375

10.25/260

7.12/181

10.88/276

72/32.6

Made in the USA (Deka Gel-tech) are correctly charged at
(2.32v/cell)14.1v/(2.3v/cell) 13.8v float @ (68°F) 20°C.
For lower and higher temperatures, from (minus) -22ºF up to (plus) +120ºF, charge
voltages should be adjusted according to the graph supplied with each battery.
Continuous use at temperatures below 68°F
will diminish the usable capacity approx; 4-5% for each 10°F
and this should be taken into account when
your system is being designed or advanced battery monitoring equipment is being
programmed etc.

Sonnenschein dryfit & Gel-tech batteries are
extremely efficient when recharging. Because of this high efficiency, it takes less time
to recharge. By design - dryfit Gel technology is self limiting on current!
Initial charge acceptance is very high ( Approx; 4xI20, or 320 Amps for an 80A dryfit)
and then settles to the normal recharge rate of approx; ½ x I20 or 40A for
an 80A dryfit. Note that constant voltage is the preferred recharge method! Three
step-temperature compensated charging is now widespread and commonly available, and uses a
combination of constant voltage and constant current to minimise recharge time.This method
is superb IF the charger unit is set for dryfit and Gel-Tech
batteries at the factory, or has the facility to be programmed by the careful
user.Alternators,(rotary charging devices) benefit greatly from 3 step temperature
compensated charging and has the added attraction of distancing the regulator from the
intense heat and vibration of the alternator.We have been applauding and endorsing the use
of these devices since 1988. On Cruising vessel's, with a rotary charger as the main
charging device,3 step regulation will save a tremendous amount of fuel and engine wear
and tear, while acheiving a fast full charge. We have a
complete range of three step regulators and High return alternators.
We only recommend that the Sonnenschein dryfit or Deka Gel-Tech
Cells batteries not be charged in a sealed container or environment. In normal usage these
Manufacturers sealed, gelled Lead Acid batteries have no need to for special ventilation
precautions. Ensuring that the air surrounding the battery bank e.g. via air slots (or
Limber Holes) is in contact with the outside air, is sufficient. This opinion applies
solely to Sonnenschein dryfit and Deka Gel-Tech.

CAVEAT.Gassing data are NOT available for
Keystone,Exide, Dynasty, Trojan or any other Gelled electrolyte brand and no
opinion is offered.For the purpose of this ventilation discussion they are treated as wet
or open vented batteries. .